Earlier today, Apple launched updated MacBook Pro models, moving its 15" and 17" models to Intel Core i5 and i7 processors utilizing integrated Intel graphics paired with NVIDIA GeForce GT 330M discrete graphics cards. The new 13" MacBook Pro, however, continues to utilize Intel Core 2 Duo processors with a custom NVIDIA GeForce 320 integrated graphics solution. Some observers have questioned why Apple did not make a more substantial upgrade to the processors used in the 13" models.

>> Steve Jobs on 13-Inch MacBook Pro's Use of Intel Core 2 Duo Processors